Debian Security Advisory

DLA-2207-1 libntlm -- LTS security update

Date Reported:
10 May 2020
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2019-17455.
More information:

It was discovered that libntlm through 1.5 relies on a fixed buffer size for tSmbNtlmAuthRequest, tSmbNtlmAuthChallenge, and tSmbNtlmAuthResponse read and write operations, as demonstrated by a stack-based buffer over-read in buildSmbNtlmAuthRequest in smbutil.c for a crafted NTLM request.

For Debian 8 Jessie, this problem has been fixed in version 1.4-3+deb8u1.

We recommend that you upgrade your libntlm packages.

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: